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GenaCL600 [577]
3 years ago
5

Which expression is equivalent to −4.6+(−0.4)+(−7.2) ? (4.6+0.4+7.2) −4.6−(0.4+7.2) (4.6+0.4)+(−7.2) −(4.6−0.4)+(−7.2)

Mathematics
1 answer:
Volgvan3 years ago
4 0

Answer:

−4.6+(−0.4)+(−7.2) =−4.6−(0.4+7.2)

Step-by-step explanation:

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N ∆ABC, if sin A = and tan A = , then what is cos A?
leva [86]

Answer:hello :

tanA = sinA/cosA

cosA = sinA /tanA

cosA =(4/5)/(4/3)

cosA=3/5

Step-by-step explanation:

8 0
3 years ago
Write the number 2.7 x 10^-3
spayn [35]

Answer:

0.0027 -  zero-point-zero-zero-twenty-seven

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
At the beginning of the season, MacDonald had to remove 555 orange trees from his farm. Each of the remaining trees produced 210
nevsk [136]

Answer:

Initial number of trees were 204.

Step-by-step explanation:

555 must be a typo error. The question will not produce correct answer. I worked out with 55 but the answer is wrong. So, the number is 5.

Lets say MacDonald removed 5 orange trees from his farm.

Let t be the initial number of trees

After removing 5 trees, the remaining left are t-5 trees

As given - Each of the remaining trees produced 210 oranges for a total harvest of 41790 oranges. This means

(t-5)210= 41790

Solving for t:

210t-1050=41790

210t=41790+1050

210t=42840

t = 204

So, initial number of trees were 204.

We can check this : 204-5=199

199\times210=41790

------------------------------------------------------------------------------------------

Working with 55 we get the wrong answer:

(t-55)210=41790

210t-11550=41790

210t=30240

t = 144

We can check this : 144-5=139

139\times210=29190  (wrong)

8 0
3 years ago
Y= x^2 + 2<br><br><br> SOLVE I need help
valentinak56 [21]
I think the answer is (0,2)
6 0
3 years ago
27m^3+64n^3
Vlad [161]
<span>27m^3+64n^3 is an example of the sum of two cubes.

There's a factoring formula for that:  a^3 + b^3 = (a + b)(a^2 - ab + b^2.

Thus,  </span><span>27m^3+64n^3  = (3m + 4n) ( 9m^2 - 12mn + 16n^2).

Could also find this out by dividing 3m+4n into  </span><span>27m^3+64n^3.</span>
8 0
3 years ago
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